Bibcode
Wünsch, Richard; Silich, Sergiy; Palouš, Jan; Tenorio-Tagle, Guillermo; Muñoz-Tuñón, C.
Referencia bibliográfica
The Astrophysical Journal, Volume 740, Issue 2, article id. 75 (2011).
Fecha de publicación:
10
2011
Revista
Número de citas
45
Número de citas referidas
42
Descripción
We study the evolution of super star cluster winds driven by stellar
winds and supernova explosions. Time-dependent rates at which mass and
energy are deposited into the cluster volume, as well as the
time-dependent chemical composition of the re-inserted gas, are obtained
from the population synthesis code Starburst99. These results are used
as input for a semi-analytic code which determines the hydrodynamic
properties of the cluster wind as a function of cluster age. Two types
of winds are detected in the calculations. For the quasi-adiabatic
solution, all of the inserted gas leaves the cluster in the form of a
stationary wind. For the bimodal solution, some of the inserted gas
becomes thermally unstable and forms dense warm clumps which accumulate
inside the cluster. We calculate the evolution of the wind velocity and
energy flux and integrate the amount of accumulated mass for clusters of
different mass, radius, and initial metallicity. We also consider
conditions with low heating efficiency of the re-inserted gas or mass
loading of the hot thermalized plasma with the gas left over from star
formation. We find that the bimodal regime and the related mass
accumulation occur if at least one of the two conditions above is
fulfilled.
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Casiana
Muñoz Tuñón